111 SOUTH WACKER
ENERGY SAVING INITIATIVES
111 S. WACKER TENANTS GO GREEN!
„  Day Light Harvesting
„  LED Lighting
„  Variable Frequency Drives
„  Battery Recycling
„  Green Roof
„  Water Savings
„  Building Automation System
„  Occupancy Light Sensors
DAY LIGHT HARVESTING
„  What is Day Light Harvesting?
„  Day Light Harvesting is the use of daylight to offset the amount of
electric lighting needed to properly light a space, in order to reduce
energy consumption.
„  This is accomplished using lighting control systems that are able to dim
lighting in response to changing daylight availability.
DAY LIGHT HARVESTING AND 111
„  Where do we use Day Light Harvesting Technology here in the
building?
„  We use Day Light Harvesting Technology in the Lobby and 29th Floor
Conference Center.
DAY LIGHT HARVESTING AND 111
„  So how do these lighting control systems save energy and how
do they work?
„  Our daylight harvesting systems use a light level sensor called a photo
sensor to detect the light levels in lobby and conference center.
„  The signal from the photo sensor is interpreted by a Lutron Lighting
Controller (an automated light switching device). Then the automated
lighting system reduces the electric output, by dimming fixtures
appropriately based off of the current light levels.
„  Our systems will dim the lights in the Lobby and in the Conference
Center all the way down to 10% depending on light levels outdoors.
Therefore reducing overall electric consumption.
LED LIGHTING
„  What is LED lighting?
„  LED lighting differs from incandescent and compact fluorescent lighting
in several ways. When designed well, LED lighting can be more efficient,
durable, versatile and longer lasting than traditional forms of lighting.
LED lighting products use light emitting diodes to produce light very
efficiently. An electrical current passed through semiconductor material
illuminates the tiny light sources that we call LEDs.
LED LIGHTING AND 111
„  Where do we use LED lighting at 111 South Wacker?
„  Over the last several years we have done LED retro's for stairwells,
exist signs, common corridors and bathrooms. With plans to do several
other areas in the building in years to come.
LED LIGHTING AND 111
„  How much energy does LED lighting really save?
„  Our distributer has given us breakdown of our recent projects.
„  For our Exit sign project we replaced 850 exist signs with new LED strips and
drivers.
„  With our exist signs operating 24 hours a day, we will have a saving of 488,085 KHW
over the life span of the fixtures in comparison to our old Fluorescent bulbs.
„  For our Stairwell lighting project we replaced 226 Fixtures in both stairwells with
new LED strips and drivers.
„  With our stairwell lights operating 24 hours a day, we will have savings of 471,271
KHW over the life span of fixtures in comparison to our old Fluorescent bulbs.
„  To give perspective, the average US household in 2012 used 10,837 KWH in one
year time. With our savings of 959,356 KWH over the lifespan of our fixtures. We
would be able to power 88.5 homes for a year.
LED LIGHTING AND ENVIRORMENT
„  How does the use of LED lighting help the environment?
„  LED lamps have a much longer lifetime and with a longer product
lifetime means that less lamps will be produced, packaged, transported
and eventually will reach their end-of-life compared to traditional
technologies … therefore, reducing environmental impact over time.
VARIABLE FREQUENCY DRIVES
„  What are Variable Frequency Drives or VFD’s and how do they
save energy?
„  A Variable Frequency Drive (VFD) is a type of motor controller that
drives an electric motor by varying the frequency and voltage supplied
to the electric motor.
„  VFD’s allow motors to run at lower speeds based on need, which will in
turn, reduce overall electrical consumption of the motor.
VFD’S AND 111
„  Where have we added VFD’s at 111 S. Wacker?
„  Over the last several years we have added VFD’S to some of our biggest
consumers of electricity Chillers 2 + 3 and Cooling Towers 1, 2, and 3.
„  By allowing these large pieces of equipment to run at lower speeds it
significantly reduces electrical consumption and our carbon foot print.
BATTERY RECYCLING PROGRAM
„  Why is it so important to recycle batteries and where can I
recycle batteries in the building?
„  When batteries are discarded improperly they can have dangerous health
and environmental consequences because of the heavy metals the batteries
contain. About two-thirds of U.S. household waste is either incinerated or
placed in a landfill. Batteries that end up in a landfill can leach chemicals and
heavy metals into soil, groundwater, lakes and streams. When incinerated,
batteries release heavy metals into the air; these metals also enter the
environment in the ash created during incineration.
„  Here @ 111 we offer a free battery recycling program with drop-off bins
located in lobby and 29th floor.
„  Since inception we have recycled thousands of batteries keeping them out
of our air and landfills.
GREEN ROOF AT 111 S. WACKER
„  What is a green roof and what purpose does it serve?
„  A green roof is a roof of a building that is covered with vegetation and a
growing medium, planted over a waterproofing membrane.
„  The green roof provides several advantages to a traditional black tar roof.
Green roofs last longer than conventional roofs, reduce energy cost with
natural insulation, and naturally absorb storm water. On a wider scale, green
roofs improve air quality and help reduce the Urban Heat Island Effect, a
condition in which city and suburban developments absorb and trap heat.
Anyone who has walked across a scalding parking lot on a hot, summer day has
felt one effect of an Urban Heat Island.
WATER SAVING INITIATIVES
„  What do we do here at 111 to save water?
„  First we use a water saving faucet that only uses a ½ gallon per minute
and only provides the user water when needed. This results a reduction
in water usage of up to 70% from tradition handle style faucets.
„  Second in women’s washrooms we use a auto flusher for stalls that only
uses 1.1 or 1.6 gallons per flush depending how long the user is in
sensor’s range. The typical household toilet can use up to 3.5 gallons per
flush.
„  Third in men’s washroom we use auto flushers for urinals that use only
a ½ gallon per flush. Some older lever style urinals can use up to 2
gallons per flush.
BUILDING AUTOMATION SYSTEM
„  What is a building automation system and how do you utilize
it for energy savings?
„  The 111 S. Wacker Building Automation System is the technology we
use to control your heating, air conditioning, and Ventilation to your
suite.
„  Heat enable/disable- during the times when we are cooling your
suite there are several fan power boxes (similar to your furnace at
home) that have heating ability. Just like your home you wouldn’t run
your air conditioning and heat at the same time. We do the same at
111. At a certain outside air temp our Building Automation System
disables the heat for those fan power boxes.
BUILDING AUTOMATION SYSTEM CONT.
„  Chilled water reset/ Static Pressure Reset- we use water to cool the
air and large fans to push the air that is supplied to the tenant’s fan power
boxes. With being in Chicago the temp can be pretty unpredictable.Varying
temps require more or less cooling. With our chilled water reset/ static
reset we can respond to those swings and be energy conscious at the same
time. We do this by supplying you with colder water and more volume of
air on hot days and warmer water and less volume of air on cooler days.
This makes our chillers and main fans not have to work as hard.
„  Optimal Start- This program is designed to start our main fan systems at
the last possible moment to reach a comfortable temp for our tenants by
7am. This achieved by monitoring temps in fan power boxes in various
locations in building, outside air temp, and previous days temps. Along with
other data points all these thrown into an algorithm and an optimal start
time is created. Starting the fans in this way is the most efficient way to run
our building.
OCCUPANCY LIGHT SENSORS
„  What are occupancy light sensors, why do we use them, and
where are they located?
„  Occupancy light sensors are just like any motion light you would have in
your backyard or front porch, but just a little more sensitive.
„  We have these occupancy sensors in several bathrooms, mechanical
areas, electrical closets, storage rooms, and net pop closets.
„  The reason why we use these sensors is simple we are human!
Everyone has from time to time forgotten to shut off a light when they
leave the room. Some of these areas are not entered every day and
could present a big waste.
Q &A
Thank you all very much for you time! Please feel free to ask any
questions of your 111 Team……..